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ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
//=== llvm/Support/Unix/ThreadLocal.inc - Unix Thread Local Data -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Unix specific (non-pthread) ThreadLocal class.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only generic UNIX code that
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//=== is guaranteed to work on *all* UNIX variants.
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//===----------------------------------------------------------------------===//
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#include "llvm/Config/config.h"
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#if defined(HAVE_PTHREAD_H) && defined(HAVE_PTHREAD_GETSPECIFIC)
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#include <cassert>
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#include <pthread.h>
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#include <stdlib.h>
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namespace llvm {
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using namespace sys;
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ThreadLocalImpl::ThreadLocalImpl() : data() {
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static_assert(sizeof(pthread_key_t) <= sizeof(data), "size too big");
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_key_create(key, nullptr);
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assert(errorcode == 0);
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(void) errorcode;
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}
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ThreadLocalImpl::~ThreadLocalImpl() {
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_key_delete(*key);
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assert(errorcode == 0);
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(void) errorcode;
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}
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void ThreadLocalImpl::setInstance(const void* d) {
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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int errorcode = pthread_setspecific(*key, d);
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assert(errorcode == 0);
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(void) errorcode;
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}
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void *ThreadLocalImpl::getInstance() {
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pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
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return pthread_getspecific(*key);
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}
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void ThreadLocalImpl::removeInstance() {
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setInstance(nullptr);
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}
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}
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#else
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namespace llvm {
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using namespace sys;
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ThreadLocalImpl::ThreadLocalImpl() : data() { }
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ThreadLocalImpl::~ThreadLocalImpl() { }
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void ThreadLocalImpl::setInstance(const void* d) { data = const_cast<void*>(d);}
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void *ThreadLocalImpl::getInstance() { return data; }
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void ThreadLocalImpl::removeInstance() { setInstance(0); }
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}
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#endif
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